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ENERGY Trust our People.Trust our Data Billings,MT 406.252.6325•Casper,WY 307.235.0515 <br /> LAEORATO..L_s Gillette,WY 307.686.7175•Helena,MT 406.442.0711 <br /> CLIENT: Energy Fuels Resources(USA) Inc <br /> Project: Whirlwind Report Date: 05/29/24 <br /> Work Order: C24050081 CASE NARRATIVE <br /> ORIGINAL SAMPLE SUBMITTAL(S) <br /> All original sample submittals have been returned with the data package <br /> SAMPLE TEMPERATURE COMPLIANCE 4°C(±2°C) <br /> Temperature of samples received may not be considered properly preserved by accepted standards Samples that are hand <br /> delivered immediately after collection shall be considered acceptable if there is evidence that the chilling process has begun <br /> GROSS ALPHA ANALYSIS <br /> Method 900 0 for gross alpha and gross beta is intended as a drinking water method for low TDS waters Data provided by <br /> this method for non potable waters should be viewed as inconsistent <br /> RADON IN AIR ANALYSIS <br /> The desired exposure time is 48 hours(2 days) The time delay in returning the canister to the laboratory for processing <br /> should be as short as possible to avoid excessive decay Maximum recommended delay between end of exposure to <br /> beginning of counting should not exceed 8 days <br /> SOIL/SOLID SAMPLES <br /> All samples reported on an as received basis unless otherwise indicated <br /> ATRAZINE, SIMAZINE AND PCB ANALYSIS <br /> Data for PCBs,Atrazine and Simazine are reported from EPA 525 2 PCB data reported by ELI reflects the results for seven <br /> individual Aroclors When the results for all seven are ND(not detected),the sample meets EPA compliance criteria for <br /> PCB monitoring <br /> SUBCONTRACTING ANALYSIS <br /> Subcontracting of sample analyses to an outside laboratory may be required If so, ENERGY LABORATORIES will utilize its <br /> branch laboratories or qualified contract laboratories for this service Any such laboratories will be indicated within the <br /> Laboratory Analytical Report <br /> BRANCH LABORATORY LOCATIONS <br /> eli-b-Energy Laboratories, Inc -Billings, MT <br /> eli-g -Energy Laboratories, Inc -Gillette, WY <br /> elrh-Energy Laboratories, Inc -Helena, MT <br /> ISO 17025 DISCLAIMER <br /> The results of this Analytical Report relate only to the items submitted for analysis <br /> ENERGY LABORATORIES, INC -CASPER,WY certifies that certain method selections contained in this report meet <br /> requirements as set forth by the above accrediting authorities Some results requested by the client may not be covered <br /> under these certifications All analysis data to be submitted for regulatory enforcement should be certified in the sample <br /> state of origin Please verify ELI's certification coverage by visiting www energylab corn <br /> ELI appreciates the opportunity to provide you with this analytical service For additional information and services visit our <br /> web page www energylab corn <br /> Tests associated with analyst identified as ELI-B were subcontracted to Energy Laboratories, 1120 S 27th St, Billings, MT, <br /> EPA Number MT00005 <br /> Page 3 of 28 <br />